Boyle, Robert, New experiments physico-mechanicall, touching the spring of the air and its effects, 1660

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    <archimedes>
      <text>
        <body>
          <chap>
            <p type="main">
              <s>
                <pb xlink:href="013/01/347.jpg" pagenum="317"/>
              by ſome of them: We had, with pure
                <lb/>
              Spirit of Wine, drawn a Tincture out of
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              a certain Concrete which uſes to be rec­
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              koned among Mineral Bodies; And this
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              Tincture being very pure and tranſparent,
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              we did, becauſe we put a great value upon
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              it, put into a Cryſtal Viol which we care­
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              fully ſtopp'd, and lock'd up in a Preſs a­
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              mong ſome other things that we ſpecial­
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              ly priz'd. </s>
              <s>This Liquor being a Chy­
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              mical Rarity, and beſides, very defecate
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              and of a pleaſing Golden Colour; we
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              had often occaſion to look upon it, and
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              ſo to take notice, that one time it ſeem'd
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              to be very much troubled, and not clear
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              as it was wont to be: Whereupon we ima­
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              gined, that though it would be ſomething
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              ſtrange, yet it was not impoſſible that
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              ſome Precipitation of the Mineral Cor­
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              puſcles was then happening, and that
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              thence the Liquor was opacated; but,
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              finding after ſome days that though the
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              expected Precipitation had not been
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              made, yet the Liquor, retaining its for­
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              mer vivid Colour, was grown clear again
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              as before; we ſomewhat wondered at it,
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              and locking it up again in the ſame Preſs,
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              we reſolved to obſerve, both whether
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              the like changes would again appear in </s>
            </p>
          </chap>
        </body>
      </text>
    </archimedes>
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